Camera Optical Lens

ABSTRACT

The present disclosure relates to optical lens, in particular to a camera optical lens, comprising, from an object side to an image side in sequence: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens; the second lens has a negative refractive power, and the third lens has a positive refractive power; wherein the camera optical lens satisfies the following conditions: 1.30≤f1/f≤2.00; 13.00≤R7/d7≤16.00, where, f denotes a focus length of the camera optical lens; f1 denotes a focus length of the first lens; R7 denotes a curvature radius of an object side surface of the fourth lens; and d7 denotes an on-axis thickness of the fourth lens. The camera optical lens may obtain high imaging performance and a low TTL.

TECHNICAL FIELD

The present disclosure generally relates to optical lens, in particularto a camera optical lens suitable for handheld terminals, such as smartphones and digital cameras, and imaging devices, such as monitors or PClens.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but in general thephotosensitive devices of camera lens are nothing more than ChargeCoupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor(CMOS sensor), and as the progress of the semiconductor manufacturingtechnology makes the pixel size of the photosensitive devices becomesmaller, plus the current development trend of electronic productstowards better functions and thinner and smaller dimensions, miniaturecamera lens with good imaging quality therefore have become a mainstreamin the market. In order to obtain better imaging quality, the lens thatis traditionally equipped in mobile phone cameras adopts a three-pieceor four-piece lens structure. Also, with the development of technologyand the increase of the diverse demands of users, and as the pixel areaof photosensitive devices is becoming smaller and smaller and therequirement of the system on the imaging quality is improvingconstantly, the five-piece, six-piece and seven-piece lens structuregradually appear in lens designs. There is an urgent need for ultra-thinwide-angle camera lenses which with good optical characteristics andfully corrected chromatic aberration.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiment can be better understood withreference to the following drawings. The components in the drawings arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is a schematic diagram of a camera optical lens in accordancewith Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram illustrating a longitudinal aberration ofthe camera optical lens shown in FIG. 1;

FIG. 3 is a schematic diagram illustrating a lateral color of the cameraoptical lens shown in FIG. 1;

FIG. 4 is a schematic diagram illustrating a field curvature anddistortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordancewith Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram illustrating a longitudinal aberration ofthe camera optical lens shown in FIG. 5;

FIG. 7 is a schematic diagram illustrating a lateral color of the cameraoptical lens shown in FIG. 5;

FIG. 8 is a schematic diagram illustrating a field curvature anddistortion of the camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram illustrating a camera optical lens inaccordance with Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram illustrating a longitudinal aberration ofthe camera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram illustrating a lateral color of thecamera optical lens shown in FIG. 9; and

FIG. 12 is a schematic diagram illustrating a field curvature anddistortion of the camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF EMBODIMENTS

To make the objects, technical solutions, and advantages of the presentdisclosure clearer, the embodiments of the present disclosure aredescribed in detail with reference to the accompanying drawings asfollows. A person of ordinary skill in the related art would understandthat, in the embodiments of the present disclosure, many technicaldetails are provided to make readers better understand this application.However, the technical solutions sought to be protected by thisapplication could be implemented, even without these technical detailsand any changes and modifications based on the following embodiments.

Embodiment 1

As shown in the accompanying drawings, the present disclosure provides acamera optical lens 10. FIG. 1 shows the camera optical lens 10 ofEmbodiment 1 of the present disclosure, the camera optical lens 10comprises six lenses. Specifically, the camera optical lens 10 comprisesin sequence from an object side to an image side: an aperture S1, afirst lens L1, a second lens L2, a third lens L3, a fourth lens L4, afifth lens L5 and a sixth lens L6. An optical element like an opticalfilter GF may be arranged between the sixth lens L6 and an image surfaceSi.

The first lens L1, the second lens L2, the third lens L3, the fourthlens L4, the fifth lens L5 and the sixth lens L6 are all made of plasticmaterial.

The second lens L2 has a negative refractive power, and the third lensL3 has a positive refractive power.

Herein, a total optical length from an object side surface of the firstlens to an image surface of the camera optical lens along an opticalaxis defined as TTL, a focal length of the camera optical lens 10 isdefined as f, and a focal length of the first lens defined as f1. Thecamera optical lens 10 satisfies the following condition:1.20≤f1/f≤2.00, which specifies the positive refractive power of thefirst lens. If the specified lower limit value is exceeded, a verystrong positive refractive power of the first lens L1 is obtained,which, though is advantageous for the lens to be thin, would make itdifficult to correct aberrations and the like, and it is not good forthe lens to be developed towards a wide angle as well. On the contrary,if the specified upper limit value is exceeded, the positive refractivepower of the first lens would become too weak, and it is difficult forthe lens to be developed toward ultra-thinning. Preferably, the cameraoptical lens 10 further satisfies the following condition:1.23≤f1/f≤1.96.

A curvature radius of the object side surface of the fourth lens L4 isdefined as R7, and an on-axis thickness of the fourth lens L4 is definedas d7. The camera optical lens 10 further satisfies the followingcondition: −25.00≤R7/d7≤−15.00. By controlling the focal power of thefourth lens L4 to be within a reasonable range, correction of theaberration of the optical system can be facilitated. Preferably, thecamera optical lens 10 further satisfies the following condition:−24.72≤R7/d7≤−16.24.

When the focus length f of the camera optical lens 10, the focus lengthf1 of the first lens L1, and the curvature radius R7 of the object sidesurface of the fourth lens L4, and the on-axis thickness d7 of thefourth lens L4 satisfy the above conditions, the camera optical lens 10has a high performance and satisfies a design requirement of low TTL.

In this embodiment, an object side surface of the first lens L1 isconvex in a paraxial region and an image side surface thereof is concavein the paraxial region, and the first lens L1 has a positive refractivepower.

A curvature radius of the object side surface of the first lens L1 isdefined as R1, a curvature radius of the image side surface of the firstlens L1 is defined as R2, and the camera optical lens further satisfiesthe following condition: −9.13≤(R1+R2)/(R1−R2)≤−1.66, thus the shape ofthe first lens is reasonably controlled, so that the first lens mayeffectively correct system spherical aberration. Preferably, the cameraoptical lens 10 further satisfies the following condition:−5.71≤(R1+R2)/(R1−R2)≤−2.08.

An on-axis thickness of the first lens L1 is defined as d1, the totaloptical length from the object side surface of the first lens to animage surface of the camera optical lens along an optical axis isdefined as TTL, and the camera optical lens further satisfies thefollowing condition: 0.05≤d1/TTL≤0.19, thus the shape of the first lensis reasonably controlled, which is beneficial for realization ofultra-thin lenses. Preferably, the camera optical lens 10 furthersatisfies the following condition: 0.09≤d1/TTL≤0.15.

In this embodiment, an object side surface of the second lens L2 is aconvex surface in a paraxial region, and an image side surface thereofis a concave surface in the paraxial region.

The focal length of the camera optical lens 10 is f, a focal length ofthe second lens L2 is f2, and the camera optical lens satisfies thefollowing condition: −45.32≤f2/f≤−3.10. It is beneficial for correctingaberration of an optical system by controlling a negative focal power ofthe second lens L2 within a reasonable range. Preferably, the cameraoptical lens 10 further satisfies the following condition:−28.32≤f2/f≤−3.88.

A curvature radius of the object side surface of the second lens L2 isR3, a curvature radius of the image side surface of the second lens L2is R4, and the camera optical lens satisfies the following condition:2.74≤(R3+R4)/(R3−R4)≤34.48, which specifies a shape of the second lensL2. When the value is with this range, a development towards ultra-thinand wide-angle lenses would facilitate correcting the problem of anon-axis chromatic aberration. Preferably, the camera optical lens 10further satisfies the following condition: 4.39≤(R3+R4)/(R3−R4)≤27.58.

An on-axis thickness of the second lens L2 is defined as d3, the totaloptical length from the object side surface of the first lens to animage surface of the camera optical lens along an optical axis isdefined as TTL, and the camera optical lens 10 satisfies the followingcondition: 0.02≤d3/TTL≤0.07. When the above condition is satisfied, itis beneficial for realization of ultra-thin lenses. Preferably, thecamera optical lens 10 further satisfies the following condition:0.04≤d3/TTL≤0.06.

In this embodiment, an object side surface of the third lens L3 isconvex in a paraxial region, and an image side surface of the third lensL3 is convex in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, a focallength of the third lens L3 is defined as f3, and the camera opticallens 10 satisfies the following condition: 0.89≤f3/f≤3.19. Anappropriate distribution of the refractive power leads to a betterimaging quality and a lower sensitivity. Preferably, the camera opticallens 10 further satisfies the following condition: 1.43≤f3/f≤2.56.

A curvature radius of the object side surface of the third lens L3 isdefined as R5, a curvature radius of the image side surface of the thirdlens L3 is defined as R6, and the camera optical lens 10 satisfies thefollowing condition: −0.85≤(R5+R6)/(R5−R6)≤−0.17, which may effectivelycontrol the shape of the third lens L3 and thus is beneficial for theshaping of the third lens L3 as well as avoiding bad shaping and stressgeneration due to extra-large surface curvature of the third lens L3.Preferably, the camera optical lens 10 satisfies the followingcondition: −0.53≤(R5+R6)/(R5−R6)≤−0.21.

An on-axis thickness of the third lens L3 is defined as d5, the totaloptical length from the object side surface of the first lens to animage surface of the camera optical lens along an optical axis isdefined as TTL, and the camera optical lens 10 further satisfies thefollowing condition: 0.05≤d5/TTL≤0.16. In this way, it is beneficial forrealization of ultra-thin lenses. Preferably, the camera optical lens 10further satisfies the following condition: 0.08≤d5/TTL≤0.13.

In this embodiment, the object side surface of the fourth lens L4 isconcave in a paraxial region and an image side surface of the fourthlens L4 is convex in the paraxial region, and the fourth lens L4 has anegative refractive power.

The focal length of the whole camera optical lens 10 is defined as f, afocal length of the fourth lens L4 is defined as f4, and the cameraoptical lens 10 satisfies the following condition: −7.56≤f4/f≤−2.04. Anappropriate distribution of the refractive power leads to a betterimaging quality and a lower sensitivity Preferably, the camera opticallens 10 satisfies the following condition: −4.73≤f4/f≤−2.55.

A curvature radius of the object side surface of the fourth lens L4 isdefined as R7, a curvature radius of the image side surface of thefourth lens L4 is defined as R8, and the camera optical lens 10satisfies the following condition: −2.62≤(R7+R8)/(R7−R8)≤−0.34, whichspecify a shape of the fourth lens L4. When the value is within thisrange, a development towards ultra-thin and wide-angle lenses wouldfacilitate solving problems, like correcting aberration of the off-axispicture angle. Preferably, the camera optical lens 10 further satisfiesthe following condition: −1.64≤(R7+R8)/(R7−R8)≤−0.42.

An on-axis thickness of the fourth lens L4 is defined as d7, the totaloptical length from the object side surface of the first lens to animage surface of the camera optical lens along an optical axis isdefined as TTL, and the camera optical lens 10 satisfies the followingcondition: 0.04≤d7/TTL≤0.14. In this way, it is beneficial for therealization of ultra-thin lenses. Preferably, the camera optical lens 10further satisfies the following condition: 0.07≤d7/TTL≤0.11.

In this embodiment, an object side surface of the fifth lens L5 isconvex in paraxial region, an image side surface of the fifth lens L5 isconvex in paraxial region, and the fifth lens L5 has a positiverefractive power.

The focal length of the camera optical lens 10 is defined as f, a focallength of the fifth lens L5 is defined as f5, and the camera opticallens 10 satisfies the following condition: 0.28≤f5/f≤0.85. Thisdefinition for the fifth lens L5 may effectively flatten a light angleof the camera lens and reduce tolerance sensitivity. Preferably, thecamera optical lens 10 further satisfies the following condition:0.44≤f5/f≤0.68.

A curvature radius of the object side surface of the fifth lens L5 isdefined as R9, a curvature radius of an image side surface of the fifthlens L5 is defined as R10, and the camera optical lens 10 satisfies thefollowing condition: 0.35≤(R9+R10)/(R9−R10)≤1.09, which specifies theshape of the fifth lens L5. With the development towards ultra-thin andwide-angle lenses, it is beneficial for solving a problem like chromaticaberration of the off-axis picture angle, when the value is within thisrange. Preferably, the camera optical lens 10 further satisfies thefollowing condition: 0.56≤(R9+R10)/(R9−R10)≤0.87.

An on-axis thickness of the fifth lens L5 is defined as d9, the totaloptical length from the object side surface of the first lens to animage surface of the camera optical lens along an optical axis isdefined as TTL, and the camera optical lens 10 satisfies the followingcondition: 0.07≤d9/TTL≤0.23. In this way, it is beneficial forrealization of ultra-thin lenses. Preferably, the camera optical lens 10further satisfies the following condition: 0.11≤d9/TTL≤0.18.

In this embodiment, an object side surface of the sixth lens L6 isconcave in a paraxial region, an image side surface of the sixth lens L6is concave in the paraxial region, and the sixth lens L6 has a negativerefractive power.

A focal length of the camera optical lens 10 is defined as f, a focallength of the sixth lens L6 is defined as f6, and the camera opticallens 10 further satisfies the following condition: −0.93≤f6/f≤−0.29. Anappropriate distribution of the refractive power leads to a betterimaging quality and a lower sensitivity Preferably, the camera opticallens 10 further satisfies the following condition: −0.58≤f6/f≤−0.36.

A curvature radius of the object side surface of the sixth lens L6 isdefined as R11, a curvature radius of the image side surface of thesixth lens L6 is defined as R12, and the camera optical lens 10 furthersatisfies the following condition: 0.15≤(R11+R12)/(R11−R12)≤0.72, whichspecifies the shape of the sixth lens L6. With the development towardsultra-thin and wide-angle lenses, it is beneficial for solving a problemlike chromatic aberration of the off-axis picture angle, when the valueis within this range. Preferably, the camera optical lens 10 furthersatisfies the following condition: 0.24≤(R11+R12)/(R11−R12)≤0.58.

An on-axis thickness of the sixth lens L6 is defined as d11, the thetotal optical length from the object side surface of the first lens toan image surface of the camera optical lens along an optical axis isdefined as TTL, and the camera optical lens 10 further satisfies thefollowing condition: 0.03≤d11/TTL≤0.09. In this way, it is beneficialfor realization of ultra-thin lenses. Preferably, the camera opticallens 10 further satisfies the following condition: 0.05≤d11/TTL≤0.08.

In this embodiment, the focal length of the camera optical lens isdefined as f, a combined focal length of the first lens and of thesecond lens is defined as f12, and the camera optical lens 10 furthersatisfies the following condition: 0.78≤f12/f≤3.03. In this way,aberration and distortion of a camera optical lens may be removed, and aback focal length of the camera optical lens may be reduced, such thatminiaturization of an imaging lens system group is maintained.Preferably, the camera optical lens 10 further satisfies the followingcondition: 1.25≤f12/f≤2.42.

In this embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 5.26 mm, which is beneficial forrealization of ultra-thin lenses. Preferably, the total optical lengthTTL of the camera optical lens 10 is less than or equal to 5.02 mm.

In this embodiment, the camera optical lens 10 has a large aperture, anF number of the aperture is less than or equal to 1.74, which has betterimaging performance. Preferably, the F number of the camera optical lens10 is less than or equal to 1.71.

With such design, the total optical length TTL of the whole cameraoptical lens 10 may be made as short as possible, thus theminiaturization characteristics is maintained.

In the following, an example will be taken to describe the cameraoptical lens 10 of the present disclosure. The symbols recorded in eachexample are as follows. The unit of the focal length, the on-axisdistance, the curvature radius, the on-axis thickness, an inflexionpoint position and an arrest point position is mm.

TTL: Optical length (the total optical length from the object sidesurface of the first lens to the image plane of the camera optical lensalong the optical axis) in mm.

Preferably, inflexion points and/or arrest points can be arranged on theobject side surface and/or image side surface of the lens, so as tosatisfy the demand for the high quality imaging. The description belowcan be referred to for specific implementations.

The design information of the camera optical lens 10 in Embodiment 1 ofthe present disclosure is shown in Tables 1 and 2.

TABLE 1 R d nd vd S1 ∞ d0= −0.437 R1 1.633 d1= 0.595 nd1 1.5467 v1 55.82R2 3.814 d2= 0.146 R3 4.962 d3= 0.230 nd2 1.6686 v2 20.53 R4 3.433 d4=0.260 R5 7.033 d5= 0.468 nd3 1.5467 v3 55.82 R6 −11.728 d6= 0.221 R7−7.983 d7= 0.457 nd4 1.6422 v4 23.83 R8 −59.355 d8= 0.237 R9 8.024 d9=0.662 nd5 1.5467 v5 55.82 R10 −1.305 d10= 0.234 R11 −2.560 d11= 0.300nd6 1.5375 v6 56.12 R12 1.394 d12= 0.470 R13 ∞ d13= 0.110 ndg 1.5168 vg64.17 R14 ∞ d14= 0.383

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radiusfor a lens;

R1: curvature radius of the object side surface of the first lens L1;

R2: curvature radius of the image side surface of the first lens L1;

R3: curvature radius of the object side surface of the second lens L2;

R4: curvature radius of the image side surface of the second lens L2;

R5: curvature radius of the object side surface of the third lens L3;

R6: curvature radius of the image side surface of the third lens L3;

R7: curvature radius of the object side surface of the fourth lens L4;

R8: curvature radius of the image side surface of the fourth lens L4;

R9: curvature radius of the object side surface of the fifth lens L5;

R10: curvature radius of the image side surface of the fifth lens L5;

R11: curvature radius of the object side surface of the sixth lens L6;

R12: curvature radius of the image side surface of the sixth lens L6;

R13: curvature radius of an object side surface of the optical filterGF;

R14: curvature radius of an image side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lenses;

d0: on-axis distance from the aperture S1 to the object side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 tothe object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 tothe object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4to the object side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image side surface of the fifth lens L5to the object side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image side surface of the sixth lens L6to the object side surface of the optical filter GF;

d13: on-axis thickness of the optical filter GF;

d14: on-axis distance from the image side surface of the optical filterGF to the image plane;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

nd6: refractive index of d line of the sixth lens L6;

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

vg: abbe number of the optical filter GF.

Table 2 shows aspherical surface data of the camera optical lens 10 inEmbodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10A12 R1 −1.6109E−01  9.0785E−03 −2.6213E−02   1.6533E−01 −5.1316E−01  9.6023E−01 R2 −1.6964E+00 −4.1922E−02 3.2356E−02 −1.5974E−01 4.8396E−01−9.4016E−01 R3  8.1057E+00 −1.3436E−01 6.0235E−02 −7.5668E−02 1.9904E−01−2.1664E−01 R4  5.8076E+00 −1.1122E−01 −4.4786E−03   4.2854E−01−1.9684E+00   5.5086E+00 R5 −5.3301E+01 −4.6844E−02 −1.1637E−01  3.8469E−01 −1.8445E+00   5.1217E+00 R6  9.6505E+01 −9.0624E−02−1.1934E−01   2.1310E−01 −6.2933E−01   1.0786E+00 R7  2.4095E+01−1.3385E−01 6.1390E−02 −4.8696E−01 1.7351E+00 −3.7510E+00 R8 −7.5089E+01−1.3112E−01 2.9048E−02 −5.0956E−03 4.2401E−02 −7.9338E−02 R9  2.3390E+01−6.2997E−02 3.1122E−02 −1.7644E−01 3.7166E−01 −4.2174E−01 R10−8.3039E+00 −9.9582E−02 2.0943E−01 −4.0064E−01 4.7645E−01 −3.2196E−01R11 −4.0692E+00 −1.1595E−01 −7.4203E−02   1.6303E−01 −1.0690E−01  3.9462E−02 R12 −8.3324E+00 −1.4771E−01 1.1866E−01 −7.1682E−023.1684E−02 −1.0035E−02 Aspherical surface coefficients A14 A16 A18 A20R1 −1.1009E+00   7.5678E−01 −2.8618E−01  4.5311E−02 R2 1.1421E+00−8.3818E−01  3.3713E−01 −5.6445E−02 R3 3.4297E−02  1.5755E−01−1.4993E−01  4.5033E−02 R4 −9.3617E+00   9.5093E+00 −5.3190E+00 1.2655E+00 R5 −8.8361E+00   9.0710E+00 −5.0714E+00  1.1836E+00 R6−1.0490E+00   6.0764E−01 −1.9865E−01  2.6281E−02 R7 5.0643E+00−3.9717E+00  1.6512E+00 −2.8338E−01 R8 8.6936E−02 −5.1193E−02 1.4924E−02 −1.7043E−03 R9 2.8809E−01 −1.2189E−01  2.9159E−02−2.9571E−03 R10 1.2474E−01 −2.7502E−02  3.2050E−03 −1.5290E−04 R11−8.9766E−03   1.2432E−03 −9.5987E−05  3.1619E−06 R12 2.1664E−03−2.9837E−04  2.3410E−05 −7.9039E−07

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16, A18 andA20 are aspheric surface indexes.

IH: Image height

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶ +A18x ¹⁸ +A2x ²  (1)

For convenience, an aspheric surface of each lens surface uses theaspheric surfaces shown in the above formula (1). However, the presentdisclosure is not limited to the aspherical polynomials form shown inthe formula (1).

Table 3 and table 4 show design data of inflexion points and arrestpoints of the camera optical lens 10 lens in Embodiment 1 of the presentdisclosure. In which, P1R1 and P1R2 represent respectively the objectside surface and the image side surface of the first lens L1, P2R1 andP2R2 represent respectively the object side surface and the image sidesurface of the second lens L2, P3R1 and P3R2 represent respectively theobject side surface and the image side surface of the third lens L3,P4R1 and P4R2 represent respectively the object side surface and theimage side surface of the fourth lens L4, P5R1 and P5R2 representrespectively the object side surface and the image side surface of thefifth lens L5, P6R1 and P6R2 represent respectively the object sidesurface and the image side surface of the sixth lens L6. The data in thecolumn named “inflexion point position” refers to vertical distancesfrom the inflexion points arranged on each lens surface to the opticaxis of the camera optical lens 10. The data in the column named “arrestpoint position” refers to the vertical distances from the arrest pointsarranged on each lens surface to the optic axis of the camera opticallens 10.

TABLE 3 Number of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 0 P1R2 1 0.725 P2R1 2 0.405 0.835 P2R2 0 P3R11 0.365 P3R2 0 P4R1 0 P4R2 1 1.055 P5R1 2 0.435 1.455 P5R2 2 1.005 1.115P6R1 1 1.175 P6R2 2 0.495 2.325

TABLE 4 Number of Arrest point arrest points position 1 P1R1 0 P1R2 0P2R1 0 P2R2 0 P3R1 1 0.585 P3R2 0 P4R1 0 P4R2 1 1.425 P5R1 1 0.725 P5R20 P6R1 1 1.995 P6R2 1 1.305

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 486 nm, 588 nm, 656 nm after passingthe camera optical lens 10 according to Embodiment 1. FIG. 4 illustratesthe field curvature and distortion of light with a wavelength of 546 nmafter passing the camera optical lens 10 according to Embodiment 1. Afield curvature S in FIG. 4 is a field curvature in a sagittaldirection, T is a field curvature in a tangential direction

Table 13 shows various values of Embodiments 1, 2, 3 and valuescorresponding to parameters which are already specified in the aboveconditions.

As shown in Table 13, Embodiment 1 satisfies the various conditions.

In this embodiment, the entrance pupil diameter of the camera opticallens is 2.255 mm, an image height of 1.0H is 2.911 mm, a FOV (field ofview) in a diagonal direction is 76.03°. Thus, the camera optical lenshas a wide-angle and is ultra-thin. Its on-axis and off-axis chromaticaberrations are fully corrected, thereby achieving excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 5 and table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd vd S1 ∞ d0= −0.412 R1 1.631 d1= 0.554 nd1 1.5467 v1 55.82R2 2.871 d2= 0.102 R3 3.925 d3= 0.230 nd2 1.6686 v2 20.53 R4 3.372 d4=0.252 R5 5.838 d5= 0.476 nd3 1.5467 v3 55.82 R6 −10.766 d6= 0.210 R7−8.896 d7= 0.445 nd4 1.6422 v4 23.83 R8 42.741 d8= 0.244 R9 8.013 d9=0.717 nd5 1.5467 v5 55.82 R10 −1.272 d10= 0.259 R11 −2.953 d11= 0.300nd6 1.5375 v6 56.12 R12 1.324 d12= 0.470 R13 ∞ d13= 0.110 ndg 1.5168 vg64.17 R14 ∞ d14= 0.400

Table 6 shows aspherical surface data of each lens of the camera opticallens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic Coefficient Aspheric Surface Indexes k A4 A6 A8 A10 A12 R1−2.1448E−01  1.4410E−02 −7.4418E−02   4.2933E−01 −1.3732E+00  2.6997E+00R2 −3.3785E+00 −5.5944E−02 2.0023E−02  9.8743E−03 −3.7832E−01 1.2342E+00 R3  4.2494E+00 −1.6387E−01 6.9893E−02  5.5798E−03−2.6472E−01  1.0227E+00 R4  5.4258E+00 −1.3007E−01 6.1160E−02 7.8908E−02 −4.0679E−01  1.3050E+00 R5 −8.1704E+01 −3.4722E−02−7.0944E−02  −1.7049E−01  8.7203E−01 −2.7053E+00 R6  8.3343E+01−1.3275E−01 −5.0672E−02   7.9625E−02 −4.2062E−01  9.3992E−01 R7 2.9208E+01 −1.9093E−01 1.3205E−01 −4.3285E−01  1.1763E+00 −2.1560E+00R8 −9.9000E+01 −1.6843E−01 1.3508E−01 −1.6599E−01  2.3805E−01−2.2363E−01 R9  1.9519E+01 −7.6545E−02 6.4280E−02 −1.4685E−01 2.5614E−01 −2.5760E−01 R10 −7.9598E+00 −1.2617E−01 2.0886E−01−2.8516E−01  2.7206E−01 −1.4998E−01 R11 −1.9376E+00 −1.2907E−01−4.5694E−02   1.6311E−01 −1.4811E−01  7.7092E−02 R12 −7.5625E+00−1.4607E−01 1.1449E−01 −6.6780E−02  2.7866E−02 −8.2283E−03 AsphericSurface Indexes A14 A16 A18 A20 R1 −3.3055E+00  2.4506E+00 −1.0066E+001.7479E−01 R2 −2.1630E+00  2.1840E+00 −1.1793E+00 2.6468E−01 R3−1.9613E+00  2.1177E+00 −1.2169E+00 2.9167E−01 R4 −2.4612E+00 2.7304E+00 −1.6444E+00 4.1272E−01 R5  4.9227E+00 −5.4747E+00 3.4242E+00 −9.3173E−01  R6 −1.0811E+00  6.9476E−01 −2.3525E−012.9289E−02 R7  2.7987E+00 −2.2474E+00  9.7339E−01 −1.7454E−01  R8 1.3455E−01 −4.9911E−02  1.0170E−02 −8.4888E−04  R9  1.5473E−01−5.6668E−02  1.1630E−02 −1.0107E−03  R10  4.5157E−02 −6.7439E−03 3.2819E−04 1.2669E−05 R11 −2.4256E−02  4.5172E−03 −4.5860E−041.9605E−05 R12  1.6532E−03 −2.1306E−04  1.5759E−05 −5.0426E−07 

Table 7 and table 8 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 20 according toEmbodiment 2 of the present disclosure.

TABLE 7 Number of Inflexion point Inflexion point inflexion pointsposition 1 position 1 P1R1 1 1.065 P1R2 2 0.635 1.015 P2R1 2 0.415 0.845eP2R2 0 P3R1 1 0.385 P3R2 0 P4R1 2 0.995 1.005 P4R2 2 0.115 1.015 P5R1 20.435 1.555 P5R2 2 0.945 1.305 P6R1 1 1.265 P6R2 2 0.515 2.355

TABLE 8 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 P1R2 0 P2R1 0 P2R2 0 P3R1 1 0.605 P3R2 0 P4R1 0 P4R2 20.195 1.395 P5R1 1 0.835 P5R2 0 P6R1 0 P6R2 1 1.335

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 486 nm, 588 nm and 656 nm afterpassing the camera optical lens 20 according to Embodiment 2. FIG. 8illustrates a field curvature and a distortion of light with awavelength of 546 nm after passing the camera optical lens 20 accordingto Embodiment 2.

As shown in Table 13, Embodiment 2 satisfies the above conditions.

In this embodiment, the entrance pupil diameter of the camera opticallens is 2.206 mm. An image height of 1.0H is 2.911 mm, a FOV (field ofview) in a diagonal direction is 78.65°. Thus, the camera optical lensis a wide-angle and is ultra-thin. Its on-axis and off-axis chromaticaberrations are fully corrected, thereby achieving excellent opticalcharacteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd vd S1 ∞ d0= −0.386 R1 1.672 d1= 0.524 nd1 1.5467 v1 55.82R2 2.610 d2= 0.084 R3 3.457 d3= 0.230 nd2 1.6686 v2 20.53 R4 3.169 d4=0.227 R5 5.011 d5= 0.501 nd3 1.5467 v3 55.82 R6 −12.362 d6= 0.243 R7−10.048 d7= 0.411 nd4 1.6422 v4 23.83 R8 30.965 d8= 0.254 R9 7.386 d9=0.730 nd5 1.5467 v5 55.82 R10 −1.308 d10= 0.278 R11 −3.629 d11= 0.300nd6 1.5375 v6 56.12 R12 1.270 d12= 0.470 R13 ∞ d13= 0.110 ndg 1.5168 vg64.17 R14 ∞ d14= 0.416

Table 10 shows aspherical surface data of each lens of the cameraoptical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 A12 R1 −2.5151E−01  1.7388E−02 −1.2160E−01  6.4076E−01 −1.9153E+003.5568E+00 R2 −4.9924E+00 −8.9720E−02 5.8925E−02 2.2049E−01 −1.6937E+004.9439E+00 R3  7.6966E−01 −2.2257E−01 1.4896E−01 2.0638E−01 −1.5202E+004.4271E+00 R4  3.4592E+00 −1.7203E−01 9.3665E−02 3.9852E−01 −1.9434E+005.1602E+00 R5 −7.9294E+01 −3.2685E−02 −1.0716E−01  1.1453E−01−4.8032E−01 1.3657E+00 R6  6.9463E+01 −1.3824E−01 −7.5217E−02 2.5859E−01 −9.1385E−01 1.8490E+00 R7  4.1317E+01 −1.9674E−01 1.0433E−01−3.0808E−01   9.2440E−01 −1.6775E+00  R8 −8.7874E+01 −1.5525E−017.2765E−02 −5.2124E−02   1.1423E−01 −1.1277E−01  R9  1.5533E+01−3.1485E−02 1.8874E−02 −1.2549E−01   2.5476E−01 −2.5051E−01  R10−7.6356E+00 −4.9561E−02 8.6339E−02 −1.4335E−01   1.4434E−01 −6.9658E−02 R11 −4.6296E−01 −7.7509E−02 −1.7171E−01  2.7876E−01 −1.9742E−018.0820E−02 R12 −6.3761E+00 −1.4275E−01 8.8988E−02 −3.7191E−02  9.9261E−03 −1.5589E−03  Aspherical surface coefficients A14 A16 A18 A20R1 −4.1646E+00 2.9852E+00 −1.1961E+00 2.0438E−01 R2 −8.2357E+007.9962E+00 −4.1884E+00 9.1742E−01 R3 −7.5339E+00 7.5435E+00 −4.0880E+009.2763E−01 R4 −8.5730E+00 8.6864E+00 −4.8799E+00 1.1604E+00 R5−2.5129E+00 2.5819E+00 −1.3447E+00 2.6325E−01 R6 −2.2083E+00 1.5640E+00−6.0779E−01 9.7684E−02 R7  2.0868E+00 −1.6291E+00   6.9902E−01−1.2623E−01  R8  5.0354E−02 −5.5778E−03  −3.1698E−03 8.5220E−04 R9 1.4112E−01 −4.7272E−02   8.7273E−03 −6.7797E−04  R10  1.3947E−022.2988E−04 −4.8053E−04 4.9547E−05 R11 −1.9140E−02 2.4319E−03 −1.3408E−041.1034E−06 R12  8.1532E−05 1.5788E−05 −3.0140E−06 1.5818E−07

Table 11 and table 12 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 30 according toEmbodiment 3 of the present disclosure.

TABLE 11 Number of Inflexion Inflexion Inflexion Inflexion inflexionpoint point point point points position 1 position 2 position 3 position4 P1R1 1 1.075 P1R2 2 0.605 0.985 P2R1 2 0.395 0.875 P2R2 0 P3R1 1 0.385P3R2 0 P4R1 0 P4R2 2 0.135 1.005 P5R1 4 0.615 0.935 1.035 1.625 P5R2 30.935 1.435 1.885 P6R1 1 1.295 P6R2 2 0.525 2.395

TABLE 12 Number of Inflexion point inflexion points position 1 P1R1 0P1R2 0 P2R1 0 P2R2 0 P3R1 1 0.625 P3R2 0 P4R1 0 P4R2 1 0.235 P5R1 11.265 P5R2 0 P6R1 0 P6R2 1 1.345

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 486 nm, 588 nm and 656 nm afterpassing the camera optical lens 30 according to Embodiment 3. FIG. 12illustrates field curvature and distortion of light with a wavelength of546 nm after passing the camera optical lens 30 according to Embodiment3.

The following Table 13 shows the values corresponding to the conditionsin this embodiment according to the above conditions. Obviously, thisembodiment satisfies the various conditions.

In this embodiment, a pupil entering diameter of the camera optical lensis 2.184 mm, an image height of 1.0H is 2.911 mm, and a FOV (field ofview) in the diagonal direction is 79.25°. Thus, the camera optical lensis a wide-angle and is ultra-thin. Its on-axis and off-axis chromaticaberrations are fully corrected, thereby achieving excellent opticalcharacteristics.

TABLE 13 Parameters and conditions Embodiment 1 Embodiment 2 Embodiment3 f 3.810 3.728 3.691 f1 4.763 5.965 7.107 f2 −17.727 −43.02 −83.634 f38.113 6.995 6.589 f4 −14.411 −11.427 −11.766 f5 2.106 2.064 2.095 f6−1.636 −1.660 −1.714 f12 5.946 6.572 7.445 FNO 1.69 1.69 1.69 f1/f 1.251.60 1.93 R7/d7 −17.47 −19.99 −24.45

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present disclosure. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the spirit and scope of the present disclosure.

What is claimed is:
 1. A camera optical lens, comprising, from an objectside to an image side in sequence: a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens and a sixth lens; wherein, the secondlens has a negative refractive power, and the third lens has a positiverefractive power; wherein, the camera optical lens satisfies followingconditions:1.20≤f1/f≤2.00; and−25.00≤R7/d7≤−15.00; where, f denotes a focus length of the cameraoptical lens; f1 denotes a focus length of the first lens, R7 denotes acurvature radius of an object side surface of the fourth lens; and d7denotes an on-axis thickness of the fourth lens.
 2. The camera opticallens according to claim 1 further satisfying following conditions:1.23≤f1/f≤1.96; and−24.72≤R7/d7≤−16.24.
 3. The camera optical lens according to claim 1,wherein the first lens has a positive refractive power, an object sidesurface of the first lens is convex in a paraxial region, and an imageside surface of the first lens is concave in the paraxial region,wherein, the camera optical lens satisfies following conditions:−9.13≤(R1+R2)/(R1−R2)≤−1.66; and0.05≤d1/TTL≤0.19; where, R1 denotes a curvature radius of the objectside surface of the first lens L1; R2 denotes a curvature radius of theimage side surface of the first lens; d1 denotes an on-axis thickness ofthe first lens; and TTL denotes a total optical length from the objectside surface of the first lens to an image plane of the camera opticallens along an optical axis.
 4. The camera optical lens according toclaim 3 further satisfying following conditions:−5.71≤(R1+R2)/(R1−R2)≤−2.08; and0.09≤d1/TTL≤0.15.
 5. The camera optical lens according to claim 1,wherein, an object side surface of the second lens is convex in aparaxial region, and an image side surface of the second lens is concavein the paraxial region; wherein, the camera optical lens satisfiesfollowing conditions:−45.32≤f2/f≤−3.10;2.74≤(R3+R4)/(R3−R4)≤34.48; and0.02≤d3/TTL≤0.07, where, f2 denotes a focus length of the second lens;R3 denotes a curvature radius of the object side surface of the secondlens; R4 denotes a curvature radius of the image side surface of thesecond lens; d3 denotes an on-axis thickness of the second lens; and TTLdenotes a total optical length from an object side surface of the firstlens to an image plane of the camera optical lens along an optical axis.6. The camera optical lens according to claim 5 further satisfyingfollowing conditions:−28.32≤f2/f≤−3.88;4.39≤(R3+R4)/(R3−R4)≤27.58; and0.04≤d3/TTL≤0.06.
 7. The camera optical lens according to claim 1,wherein, an object side surface of the third lens is convex in aparaxial region, and an image side surface of the third lens is convexin the paraxial region; wherein, the camera optical lens satisfiesfollowing conditions:0.89≤f3/f≤3.19;−0.85≤(R5+R6)/(R5−R6)≤−0.17; and0.05≤d5/TTL≤0.16; where, f3 denotes a focus length of the third lens; R5denotes a curvature radius of the object side surface of the third lens;R6 denotes a curvature radius of the image side surface of the thirdlens; d5 denotes an on-axis thickness of the third lens; and TTL denotesa total optical length from an object side surface of the first lens toan image plane of the camera optical lens along an optical axis.
 8. Thecamera optical lens according to claim 7 further satisfying followingconditions:1.43≤f3/f≤2.56;−0.53≤(R5+R6)/(R5−R6)≤−0.21; and0.08≤d5/TTL≤0.13.
 9. The camera optical lens according to claim 1,wherein the fourth lens has a negative refractive power, the object sidesurface of the fourth lens is concave in a paraxial region, wherein, thecamera optical lens satisfies the following conditions:−7.56≤f4/f≤−2.04;−2.62≤(R7+R8)/(R7−R8)≤−0.34; and0.04≤d7/TTL≤0.14; where, f4 denotes a focus length of the fourth lens;R8 denotes a curvature radius of an image side surface of the fourthlens; and TTL denotes a total optical length from an object side surfaceof the first lens to an image plane of the camera optical lens along anoptical axis.
 10. The camera optical lens according to claim 9 furthersatisfying following conditions:−4.73≤f4/f≤−2.55;−1.64≤(R7+R8)/(R7−R8)≤−0.42; and0.07≤d7/TTL≤0.11.
 11. The camera optical lens according to claim 1,wherein, the fifth lens has a positive refractive power, an object sidesurface of the fifth lens is convex in a paraxial region, and an imageside surface of the fifth lens is convex in the paraxial region,wherein, the camera optical lens satisfies following conditions:0.28≤f5/f≤0.85;0.35≤(R9+R10)/(R9−R10)≤1.09; and0.07≤d9/TTL≤0.23 where, f5 denotes a focus length of the fifth lens; R9denotes a curvature radius of the object side surface of the fifth lens;R10 denotes a curvature radius of the image side surface of the fifthlens; d9 denotes an on-axis thickness of the fifth lens; and TTL denotesa total optical length from an object side surface of the first lens toan image plane of the camera optical lens along an optical axis.
 12. Thecamera optical lens according to claim 11 further satisfying followingconditions:0.44≤f5/f≤0.68;0.56≤(R9+R10)/(R9−R10)≤0.87; and0.11≤d9/TTL≤0.18.
 13. The camera optical lens according to claim 1,wherein, the sixth lens has a negative refractive power, an object sidesurface of the sixth lens is concave in a paraxial region, and an imageside surface of the sixth lens is concave in the paraxial region,wherein, the camera optical lens satisfies the following conditions:−0.93≤f6/f≤−0.29;0.15≤(R11+R12)/(R11−R12)≤0.72; and0.03≤d11/TTL≤0.09; where, f6 denotes a focus length of the sixth lens;R11 denotes a curvature radius of the object side surface of the sixthlens; R12 denotes a curvature radius of the image side surface of thesixth lens; d11 denotes an on-axis thickness of the sixth lens; and TTLdenotes a total optical length from an object side surface of the firstlens to an image plane of the camera optical lens along an optical axis.14. The camera optical lens according to claim 13 further satisfyingfollowing conditions:−0.58≤f6/f≤−0.36;0.24≤(R11+R12)/(R11−R12)≤0.58; and0.05≤d11/TTL≤0.08.
 15. The camera optical lens according to claim 1,wherein a combined focal length f12 of the first lens and the secondlens satisfies following condition:0.78≤f12/f≤3.03.
 16. The camera optical lens according to claim 15,wherein, the camera optical lens further satisfies following conditions:1.25≤f12/f≤2.42.
 17. The camera optical lens according to claim 1,wherein a total optical length TTL from an object side surface of thefirst lens to an image plane of the camera optical lens along an opticalaxis is less than or equal to 5.26 mm.
 18. The camera optical lensaccording to claim 17, wherein the total optical length TTL of thecamera optical lens is less than or equal to 5.02 mm.
 19. The cameraoptical lens according to claim 1, wherein a F number of the cameraoptical lens is less than or equal to 1.74.
 20. The camera optical lensaccording to claim 19, wherein the F number of the camera optical lensis less than or equal to 1.71.